Pith Number

pith:YT4QAPXX

pith:2017:YT4QAPXX6LHMMAZPITLNRT7EWQ

not attested not anchored not stored refs pending

Positive Definiteness of Paired Symmetric Tensors and Elasticity Tensors

Liqun Qi, Zhenghai Huang

arxiv:1705.04315 v3 · 2017-05-11 · math.RA · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YT4QAPXX6LHMMAZPITLNRT7EWQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:40:57.680199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4f9003ef7f2cec6032f44d6d8cfe4b42705a77f34718a56063e097d98ba9443

Aliases

arxiv: 1705.04315 · arxiv_version: 1705.04315v3 · doi: 10.48550/arxiv.1705.04315 · pith_short_12: YT4QAPXX6LHM · pith_short_16: YT4QAPXX6LHMMAZP · pith_short_8: YT4QAPXX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YT4QAPXX6LHMMAZPITLNRT7EWQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c4f9003ef7f2cec6032f44d6d8cfe4b42705a77f34718a56063e097d98ba9443

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f70140e3589440653f4d7714348c499b3e60ff239d286a1f17f9cc0aff783a34",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2017-05-11T01:41:32Z",
    "title_canon_sha256": "8e179e509d8e6d38a9d12ad5f3272afbe047afc3cd1eb0a4c0e5848463e920cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04315",
    "kind": "arxiv",
    "version": 3
  }
}